feat: storage actions + git module actions

client/graph/admin/storage/storage-mutation-executeaction.gql

@@ -0,0 +1,12 @@
+mutation($targetKey: String!, $handler: String!) {
+  storage {
+    executeAction(targetKey: $targetKey, handler: $handler) {
+      responseResult {
+        succeeded
+        errorCode
+        slug
+        message
+      }
+    }
+  }
+}

client/graph/admin/storage/storage-query-targets.gql

@@ -17,6 +17,11 @@ query {
         key
         value
       }
+      actions {
+        handler
+        label
+        hint
+      }
     }
   }
 }